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Página 312 - OF SCIENCE. NATURE expounds in a popular and yet authentic manner, the GRAND RESULTS OF SCIENTIFIC RESEARCH, discussing the most recent scientific discoveries, and pointing out the bearing of Science upon civilisation and progress, and its claims to a more general recognition, as well as to a higher place in the educational system of the country. It contains original articles on all subjects within the domain of Science ; Reviews setting forth the nature and value of recent...
Página 498 - It is a marvelous reflection that the whole of the superficial mould over any such expanse has passed, and will again pass every few years, through the bodies of worms. The plough is one of the most ancient and most valuable of man's inventions; but long before he existed the land...
Página 341 - ... it becomes probable that these ultra-violet rays must make themselves apparent to the ants as a distinct and separate colour (of which we can form no idea), but as different from the rest as red is from yellow or green from violet. The question also arises whether white light to these insects would differ from our white light in containing this additional colour.
Página 499 - It may be doubted whether there are many other animals which have played so important a part in the history of the world, as have these lowly organized creatures.
Página 340 - Journ. voL xiv. p. 278) he had given a series of experiments made on ants with light of different colours, in order if possible to determine whether ants had the power of distinguishing colours. For this purpose he utilised the dread which ants, when in their nest, have of light. Not unnaturally, if a nest is uncovered, they think they are being attacked, and hasten to carry their young away to a darker, and, as they suppose, a safer place.
Página 441 - Ireland hath neither singing nightingale nor chattering pie,1 nor undermining mole, nor black crow, but only crows of mingled colour such as we call Royston crows. They have such plenty of pheasants as I have known sixty served at one feast, and abound much more with rails, but partridges are somewhat rare. There be very many eagles, and great plenty of hares, conies, hawks, called...
Página 91 - ... four, five or six feet, and then, with surprising dexterity, it ejects out of its tubular mouth a single drop of water, which never fails striking the fly into the sea, where it soon becomes its prey.
Página 498 - They periodically expose the mould to the air, and sift it so that no stones larger than the partides which they can swallow are left in it. They mingle the whole intimately together, like a gardener who prepares fine soil for his choicest plants. In this state it is well fitted to retain moisture and to absorb all soluble substances, as well as for the process of nitrification. The bones...